2101323213 has 12 divisors (see below), whose sum is σ = 3311176128. Its totient is φ = 1273529160.

The previous prime is 2101323193. The next prime is 2101323223. The reversal of 2101323213 is 3123231012.

2101323213 is a `hidden beast` number, since 210 + 132 + 321 + 3 = 666.

It is not a de Polignac number, because 2101323213 - 2⁶ = 2101323149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101323223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10612645 + ... + 10612842.

It is an arithmetic number, because the mean of its divisors is an integer number (275931344).

Almost surely, 2^2101323213 is an apocalyptic number.

It is an amenable number.

2101323213 is a deficient number, since it is larger than the sum of its proper divisors (1209852915).

2101323213 is a wasteful number, since it uses less digits than its factorization.

2101323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21225504 (or 21225501 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2101323213 is about 45840.1921134718. The cubic root of 2101323213 is about 1280.8480734360.

Adding to 2101323213 its reverse (3123231012), we get a palindrome (5224554225).

The spelling of 2101323213 in words is "two billion, one hundred one million, three hundred twenty-three thousand, two hundred thirteen".